Figure 12-1 The Neuron
Use Figure 12-1 to answer the following questions:
-Which type of membrane channels are found at label "3"?
A)voltage-gated Na⁺ channels
B)voltage-gated K⁺ channels
C)chemically-gated Na⁺ and K⁺ channels
D)voltage-gated Ca²⁺ channels
E)both voltage-gated Na⁺ channels and voltage-gated K⁺ channels

Question

Figure 12-1 The Neuron
Use Figure 12-1 to answer the following questions:
-Which type of membrane channels are found at label "3"?
A)voltage-gated Na⁺ channels 
B)voltage-gated K⁺ channels 
C)chemically-gated Na⁺ and K⁺ channels 
D)voltage-gated Ca²⁺ channels 
E)both voltage-gated Na⁺ channels and voltage-gated K⁺ channels

Quizplus · Accepted Answer

Label "3" indicates the axon hillock, where both voltage-gated Na⁺ channels and voltage-gated K⁺ channels are found. This is where the action potential is initiated and propagated down the axon.

Figure 12-1 the Neuron